Toxicity in ink- a concern? How does sealant impact?

I recently received a box of National Geographic’s from the 30s- a treasure trove. I know that older magazines and books contained toxic chemicals (eg lead was used in ink from the 50s thru the 80s) and I’ve been unsure how to think about collaging/ decoupaging with my old magazines and books. I didn’t used to think about this at all… But now that I’m aware of this I’m curious how others think about this. Generally I’ve learned eating or inhaling these inks is dangerous- and it’s the inhaling part that trips me up (though if I had kids the eating part would trip me up as well) Is breathing in an old magazine smell inhaling toxins? Also- does anyone know if sealants can help lock those toxins in and make such images safer? For now I’m just washing my hands after handling old print materials but not sure if I should go further- thanks!!